129132916 has 12 divisors (see below), whose sum is σ = 246526560. Its totient is φ = 58696760.

The previous prime is 129132893. The next prime is 129132931. The reversal of 129132916 is 619231921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1467376 + ... + 1467463.

It is an arithmetic number, because the mean of its divisors is an integer number (20543880).

Almost surely, 2^129132916 is an apocalyptic number.

It is an amenable number.

129132916 is a deficient number, since it is larger than the sum of its proper divisors (117393644).

129132916 is a wasteful number, since it uses less digits than its factorization.

129132916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934854 (or 2934852 counting only the distinct ones).

The product of its digits is 5832, while the sum is 34.

The square root of 129132916 is about 11363.6664857783. Note that the first 3 decimals coincide. The cubic root of 129132916 is about 505.4509137975.

The spelling of 129132916 in words is "one hundred twenty-nine million, one hundred thirty-two thousand, nine hundred sixteen".